Why? You can still commit crime in this game, easy as pie. You want to gank, go out and gank. Pirate? Go pirate. Blow up surface stations, by all means. Tag cops in the RES, go for it.
All you have to do is visit the IF and pay off the bounty and you're good to go.
Get a fine, just pay it off in the issuing jurisdiction.
I don't see what the complaint is.
The "complaint" is that the whiners don't like the idea of consequences. My only complaint is that it doesn't go far enough. Detention Centers? Great, but why only Mega-ships? Why not Outposts & Surface Settlements? Bounties that stick to your ship until you clean it? Great, but why not apply bounties that properly fit the size of the crimes, & which have the true potential to hit Commanders in their hip pockets?